Belt buckle



FIG. 1 is a front view showing the belt buckle embodying my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a perspective view thereof taken from the left side;

FIG. 6 is a perspective view thereof taken from the right side; and

FIG. 7 is a front view thereof showing the belt buckle in the open state. 

The ornamental design for belt buckle, as shown and described. 